000 FZNT02 KNHC 162159 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 2230 UTC MON AUG 16 2021 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT. SECURITE ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND GULF OF MEXICO SYNOPSIS VALID 1800 UTC MON AUG 16. 24 HOUR FORECAST VALID 1800 UTC TUE AUG 17. 48 HOUR FORECAST VALID 1800 UTC WED AUG 18. .WARNINGS. ...TROPICAL STORM WARNING... .TROPICAL STORM FRED NEAR 29.9N 85.3W 995 MB AT 2100 UTC AUG 16 MOVING NNE OR 020 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 75 NM NE QUADRANT...100 NM SE QUADRANT...30 NM SW QUADRANT...AND 40 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 0 NM N SEMICIRCLE...75 NM SE QUADRANT AND 60 NM SW QUADRANT WITH SEAS TO 18 FT. ELSEWHERE WITHIN 29N83W TO 28N84W TO 28N86W TO 30N87W TO 30N84W TO 29N83W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. WITHIN 28N86W TO 28N88W TO 28N90W TO 30N88W TO 30N87W TO 28N86W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. SCATTERED MODERATE ISOLATED STRONG CONVECTION N OF 25N EAST OF 85W. .24 HOUR FORECAST TROPICAL DEPRESSION FRED INLAND NEAR 34.0N 84.3W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. OVER FORECAST WATERS...WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .36 HOUR FORECAST POST-TROPICAL FRED NEAR 37.0N 82.5W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. .48 HOUR FORECAST POST-TROPICAL FRED NEAR 39.5N 80.0W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. .60 HOUR FORECAST...DISSIPATED. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. ...TROPICAL STORM WARNING... .TROPICAL DEPRESSION GRACE NEAR 17.9N 72.4W 1007 MB AT 2100 UTC AUG 16 MOVING WNW OR 285 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 17N69W TO 17N73W TO 21N73W TO 20N72W TO 21N70W TO 17N69W...INCLUDING THE WINDWARD PASSAGE...WINDS 20 TO 30 KT. SEAS LESS THAN 8 FT. NUMEROUS MODERATE SCATTERED STRONG CONVECTION FROM 15N-20N BETWEEN 68W-75W. .24 HOUR FORECAST TROPICAL STORM GRACE NEAR 18.9N 77.2W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM S SEMICIRCLE...70 NM NE QUADRANT AND 40 NM NW QUADRANT. SEAS 10 TO 11 FT. ELSEWHERE WITHIN 17N75W TO 19N78W TO 21N77W TO 23N78W TO 22N74W TO 17N75W...INCLUDING THE WINDWARD PASSAGE...WINDS 20 TO 33 KT. SEAS 8 TO 10 FT. .48 HOUR FORECAST TROPICAL STORM GRACE NEAR 20.2N 83.5W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM NE QUADRANT...90 NM SE QUADRANT...30 NM SW QUADRANT...AND 80 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM IN N SEMICIRCLE WITH SEAS TO 23 FT. ELSEWHERE WITHIN 20N79W TO 18N79W TO 19N84W TO 22N85W TO 23N82W TO 20N79W...INCLUDING THE YUCATAN CHANNEL...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. .72 HOUR FORECAST TROPICAL STORM GRACE NEAR 21.6N 89.9W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST HURRICANE GRACE NEAR 22.4N 95.1W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. .120 HOUR FORECAST HURRICANE GRACE INLAND NEAR 22.4N 98.8W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. ...TROPICAL STORM WARNING... .TROPICAL STORM HENRI NEAR 31.0N 62.9W 1010 MB AT 2100 UTC AUG 16 MOVING SSW OR 200 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 20 NM NE AND SW QUADRANTS...0 NM NW QUADRANT AND 30 NM SE QUADRANT. SEAS 8 TO 9 FT. ELSEWHERE WITHIN 30 NM OF THE CENTER...WINDS 20 TO 33 KT. SEAS TO 8 FT. SCATTERED MODERATE ISOLATED STRONG CONVECTION FROM 28N-31N BETWEEN 60W-63W. .24 HOUR FORECAST TROPICAL STORM HENRI NEAR 30.3N 64.2W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM E SEMICIRCLE AND 20 NM W SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 30 NM OF CENTER WITH SEAS TO 15 FT. ELSEWHERE WITHIN 29N63W TO 29N65W TO 31N66W TO 31N62W TO 29N63W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. .48 HOUR FORECAST TROPICAL STORM HENRI NEAR 30.2N 66.9W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM E SEMICIRCLE...30 NM SW QUADRANT AND 40 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 30 NM OF CENTER WITH SEAS TO 17 FT. ELSEWHERE WITHIN 29N65W TO 29N68W TO 31N68W TO 31N65W TO 29N65W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. .72 HOUR FORECAST TROPICAL STORM HENRI NEAR 30.5N 69.9W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST TROPICAL STORM HENRI NEAR 31.8N 70.2W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. .120 HOUR FORECAST TROPICAL STORM HENRI NEAR 34.2N 68.4W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. .SYNOPSIS AND FORECAST. .24 HOUR FORECAST WITHIN 15N72W TO 15N67W TO 11N67W TO 11N72W TO 15N82W E WINDS 20 TO 25 KT. SEAS TO 8 FT. .48 HOUR FORECAST WITHIN 12N72W TO 12N78W TO 17N78W TO 17N73W TO 18N71W TO 12N72W E WINDS 20 TO 25 KT. SEAS TO 8 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER LANDSEA. NATIONAL HURRICANE CENTER.